Finneces: poet to whom Finn went to learn poetry and for whom he cooked the salmon of wisdom

340.29 "all our fannacies daintied her"
376.32 "The Fenn, the Fenn, the kinn of all Fenns!" (Finneces to Demne after the latter's burning his thumb while cooking the salmon of wisdom: 'Finn is thy name, my lad, and to thee was the salmon given to be eaten, and indeed thou art the Finn')
377.16 "The finnecies of poetry wed music."

salmon of wisdom
used to suck his thumb, after it was burnt while cooking the Salmon of Wisdom

028.35 "be that samesake sibsubstitute of a hooky salmon"
132.35 "as for the salmon he was coming up in him all life"
162.23 "He has the lac of wisdom" (lax = salmon)
337.10 "salmon solemonly angled"
376.32 "The Fenn, the Fenn, the kinn of all Fenns!"
596.06 "fum in his mow"
597.36 "You have snakked mid a fish."

his army of followers were the Fianna

131.09 "first of the fenians"214.11 "Is that the great Finnleader himself"

021.14 "And, be dermot, who come to the keep of his inn only the niece-of-his-in-law, the prankquean."125.06 "after the morrow Diremood is the"375.29 "Fummuccumul with a graneen aveiled"

596.22 "when no crane in Elga is heard" (a hag tricking Diarmuid and Grainne during the approach of Finn to their hiding-place on Howth: 'there is not a smooth plain in all Elga... Not a bell is heard, no crane talks')